Space Weather Message Code: ALTK07 Serial Number: 88 Issue Time: 2014 Sep 12 2309 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2014 Sep 12 2302 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Scale: G3 - Strong NOAA Space Weather Scale descriptions can be found at swpc.noaa.gov/NOAAscales Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude. Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices. Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur. Radio - HF (high frequency) radio may be intermittent. Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Posted on: Sat, 13 Sep 2014 00:30:52 +0000
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